NASA has some excellent educational resources, including a site with information about careers at NASA. This is a great way to show students what types of things NASA does and who does them.
There is information on what each type of job is and does, intern opportunities for students, profiles of NASA employees, job opportunities and job descriptions, and posters about jobs at NASA.
It's a great resource to get students interested in science, math and engineering. I use NASA and the space program as a way to get students excited about STEM topics and careers using the "wow" factor.
Some other posts about NASA's educational resources: